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Fisher information matrix for multivariate normal regression model
Fisher = ecmmvnrfish(Data, Design, Covariance, Method, MatrixFormat, CovarFormat)
Data | NUMSAMPLES-by-NUMSERIES matrix with NUMSAMPLES samples of a NUMSERIES-dimensional random vector. Missing values are represented as NaNs. Only samples that are entirely NaNs are ignored. (To ignore samples with at least one NaN, use mvnrfish.) |
Design | A matrix or a cell array that handles two model structures:
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Covariance | NUMSERIES-by-NUMSERIES matrix of estimates for the covariance of the residuals of the regression. |
Method | (Optional) String that identifies method of calculation for the information matrix:
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MatrixFormat | (Optional) String that identifies parameters to be included in the Fisher information matrix:
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CovarFormat | (Optional) String that specifies the format for the covariance matrix. The choices are:
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Fisher = ecmmvnrfish(Data, Design, Covariance, Method, MatrixFormat, CovarFormat) computes a Fisher information matrix based on current maximum likelihood or least-squares parameter estimates that account for missing data.
Fisher is a NUMPARAMS-by-NUMPARAMS Fisher information matrix or Hessian matrix. The size of NUMPARAMS depends on MatrixFormat and on current parameter estimates. If MatrixFormat = 'full',
NUMPARAMS = NUMSERIES * (NUMSERIES + 3)/2
If MatrixFormat = 'paramonly',
NUMPARAMS = NUMSERIES
Note ecmmvnrfish operates slowly if you calculate the full Fisher information matrix. |
See Multivariate Normal Regression, Least-Squares Regression, Covariance-Weighted Least Squares, Feasible Generalized Least Squares, and Seemingly Unrelated Regression.
![]() | ecmlsrobj | ecmmvnrmle | ![]() |
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